Highly potent 5-aminotetrahydropyrazolopyridines: Enantioselective dopamine D3 receptor binding, functional selectivity, and analysis of receptor-ligand interactions

Tschammer N, Elsner J, Götz A, Ehrlich K, Schuster S, Ruberg M, Kühhorn J, Thompson D, Whistler J, Hübner H, Gmeiner P (2011)


Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Original Authors: Tschammer N., Elsner J., Goetz A., Ehrlich K., Schuster S., Ruberg M., Kuhhorn J., Thompson D., Whistler J., Hubner H., Gmeiner P.

Publisher: American Chemical Society

Book Volume: 54

Pages Range: 2477-2491

Journal Issue: 7

DOI: 10.1021/jm101639t

Abstract

Heterocyclic dopamine surrogates of types 5 and 7 were synthesized and investigated for their dopaminergic properties. The enantiomerically pure biphenylcarboxamide (S)-5a displayed an outstanding K of 27 pM at the agonist-labeled D receptor and significant selectivity over the D subtype. Measurement of [ S]GTP-S incorporation in the presence of a coexpressed PTX-insensitive G subunit indicated highly efficient G-protein coupling. Comparison of ligand efficacy data from cAMP accumulation and [ H]thymidine incorporation experiments revealed that ligand biased signaling is exerted by the test compound (S)-5a. Starting from the D crystal structure, a combination of homology modeling and site directed mutagenesis gave valuable insights into the binding mode and the intermolecular origins of stereospecific receptor recognition. According to these data, the superior affinity of the eutomer 5a is caused by the favorable binding energy that results from interaction between the ligand's central ammonium unit and the aspartate residue in position 3.32 of the receptor. © 2011 American Chemical Society.

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APA:

Tschammer, N., Elsner, J., Götz, A., Ehrlich, K., Schuster, S., Ruberg, M.,... Gmeiner, P. (2011). Highly potent 5-aminotetrahydropyrazolopyridines: Enantioselective dopamine D3 receptor binding, functional selectivity, and analysis of receptor-ligand interactions. Journal of Medicinal Chemistry, 54(7), 2477-2491. https://doi.org/10.1021/jm101639t

MLA:

Tschammer, Nuska, et al. "Highly potent 5-aminotetrahydropyrazolopyridines: Enantioselective dopamine D3 receptor binding, functional selectivity, and analysis of receptor-ligand interactions." Journal of Medicinal Chemistry 54.7 (2011): 2477-2491.

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